-56.3% is the change from 920 to 402
Calculation steps:
[( 402 - 920 ) ÷ 920] x 100 = -56.3%
Formula
Percentage change = [(402 - 920) / 920] x 100
Subtract the new number by the original number
402 - 920 = -518
-518 ÷ 920 = -0.5630434782608695
-0.5630434782608695 x 100 = -56.3%